TW201504087A - Vehicle headlamp module - Google Patents

Vehicle headlamp module Download PDF

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Publication number
TW201504087A
TW201504087A TW102126205A TW102126205A TW201504087A TW 201504087 A TW201504087 A TW 201504087A TW 102126205 A TW102126205 A TW 102126205A TW 102126205 A TW102126205 A TW 102126205A TW 201504087 A TW201504087 A TW 201504087A
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TW
Taiwan
Prior art keywords
light
lamp module
light source
crystal layer
mirror
Prior art date
Application number
TW102126205A
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Chinese (zh)
Inventor
Po-Chou Chen
Original Assignee
Hon Hai Prec Ind Co Ltd
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Publication date
Application filed by Hon Hai Prec Ind Co Ltd filed Critical Hon Hai Prec Ind Co Ltd
Priority to TW102126205A priority Critical patent/TW201504087A/en
Priority to US14/014,396 priority patent/US20150029409A1/en
Publication of TW201504087A publication Critical patent/TW201504087A/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/16—Laser light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/12—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of emitted light
    • F21S41/135—Polarised
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/176—Light sources where the light is generated by photoluminescent material spaced from a primary light generating element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/63—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates
    • F21S41/64—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates by changing their light transmissivity, e.g. by liquid crystal or electrochromic devices
    • F21S41/645—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates by changing their light transmissivity, e.g. by liquid crystal or electrochromic devices by electro-optic means, e.g. liquid crystal or electrochromic devices

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • General Physics & Mathematics (AREA)

Abstract

A vehicle headlamp module includes a laser light source, a diffracting element and a crystal layer. A light field is formed after laser light emitting from the laser light source is diffracted by the diffracting element. The crystal layer includes a plurality of pels units. The pels units selectively stay at a first state or a second state with a different area of the pels units from the first state. When the pels units stay at the first state, a high beam light emits out after the light travels through the pels units. When the pels units stay at the first state, a low beam light emits out after part of the light are sheltered from the pels units and the other part of the light travels through the pels units.

Description

車前燈燈具模組Headlight lighting module

本發明涉及一種燈具模組，特別涉及一種車前燈燈具模組。The invention relates to a lamp module, in particular to a headlight lamp module.

汽車車前燈的設計首先是為了照亮前方道路使駕駛員得以看清路況，其次還需考慮照明安全，即，在前方有來車時必須避免自身的強烈燈光照射到對方汽車駕駛員的眼睛，使其看不清楚前方而發生危險。因此，各國家地區對汽車車前燈的照明均有規範，在前方無駛來車輛時可以使用照明範圍較廣的遠燈光型；而在前方有來車時必須切換成近燈光型。The design of the car headlights is first to illuminate the road ahead so that the driver can see the road conditions. Secondly, it is necessary to consider the safety of the lighting. That is, when there is a car in front, it is necessary to avoid the strong light of its own to the eyes of the driver of the other car. It makes it difficult to see the front clearly. Therefore, the lighting of automobile headlights is regulated in various countries and regions. The long-light type with a wide illumination range can be used when there is no vehicle coming in front; and the near-light type must be switched when there is a vehicle in front.

因此就要求汽車車前燈具備可切換遠、近燈光型的功能。習知的切換遠、近燈光型的車前燈通常包括光源、反射面、遮罩和透鏡。當需要遠燈光型時，光源發出的光線經反射面全部出射，並經由透鏡調光後形成遠燈光型；當需要近燈光型時，遮罩則由一可移動機構移動至一特定位置，將部分會投射對方駕駛員眼睛的光線擋住而僅使一部分朝向水平線以下出射的光線射出，未被遮罩遮擋的光線經由透鏡調光後形成近燈光型。然而，該種遮罩結構需要特定的移動機構才能達到調光的目的，從而過多的佔用車前燈內部結構的空間，不但使調光的機構繁瑣，而且使車前燈具有較大的體積。Therefore, the car headlights are required to have the function of switching between far and near lights. Conventional switching of near- and near-light headlights typically includes a light source, a reflective surface, a mask, and a lens. When the far-light type is required, the light emitted by the light source is completely emitted through the reflecting surface, and is dimmed by the lens to form a far-light type; when the near-light type is required, the mask is moved to a specific position by a movable mechanism, Part of the light that projects the opponent's eyes is blocked, and only a part of the light that is emitted below the horizontal line is emitted. The light that is not blocked by the mask is dimmed by the lens to form a near-light type. However, such a mask structure requires a specific moving mechanism to achieve the purpose of dimming, thereby excessively occupying the space of the internal structure of the headlight, which not only makes the dimming mechanism cumbersome, but also makes the headlight have a large volume.

有鑒於此，有必要提供一種結構簡單且體積較小的車前燈燈具模組。In view of this, it is necessary to provide a headlight lamp module that is simple in structure and small in size.

一種車前燈燈具模組，包括鐳射光源、繞射元件和液晶層，鐳射光源發出的鐳射光經繞射元件後形成光場，液晶層包括複數畫素單元，這些畫素單元選擇性地在透光面積不同的第一狀態和第二狀態之間切換，當畫素單元切換至第一狀態時，光場的光線穿過畫素單元而投射出遠光，當畫素單元切換至第二狀態時，光場的部分光線被阻擋，另一部分光線穿過畫素單元而投射出近光。A headlight lamp module comprises a laser light source, a diffractive element and a liquid crystal layer, wherein the laser light emitted by the laser light source forms a light field after the diffraction element, and the liquid crystal layer comprises a plurality of pixel units, the pixel units being selectively Switching between the first state and the second state with different light transmission areas, when the pixel unit is switched to the first state, the light of the light field passes through the pixel unit to project the high beam, and when the pixel unit switches to the second In the state, part of the light in the light field is blocked, and another part of the light passes through the pixel unit to project the low beam.

本發明的車前燈燈具模組利用鐳射光搭配液晶層，利用偏振光入射到液晶層內可通過控制液晶層內的畫素單元的透光面積從而控制最終出射光線的亮或暗，進而轉換遠光和近光，而不需要其他遮罩結構及其輔助機構，有效的節省車前燈內部結構的空間，使調光機構簡化，並可有效的縮小車前燈具的體積。The headlight lamp module of the invention uses laser light to match the liquid crystal layer, and the polarized light is incident into the liquid crystal layer to control the light or darkness of the finally emitted light by controlling the light transmission area of the pixel unit in the liquid crystal layer, thereby converting High beam and low beam, without the need for other mask structures and their auxiliary mechanisms, effectively save space in the internal structure of the headlights, simplify the dimming mechanism, and effectively reduce the volume of the front lights.

下面參照附圖，結合具體實施例對本發明作進一步的描述。The invention will now be further described with reference to the specific embodiments thereof with reference to the accompanying drawings.

100‧‧‧車前燈燈具模組100‧‧‧ headlights lighting module

10‧‧‧光源10‧‧‧Light source

20‧‧‧繞射元件20‧‧‧Diffractive components

22‧‧‧孔22‧‧‧ holes

24‧‧‧板體24‧‧‧ board

30‧‧‧液晶層30‧‧‧Liquid layer

40‧‧‧螢光粉層40‧‧‧Fluorescent powder layer

50‧‧‧透鏡50‧‧‧ lens

60‧‧‧散熱模組60‧‧‧ Thermal Module

62‧‧‧基板62‧‧‧Substrate

64‧‧‧散熱鰭片64‧‧‧Heat fins

70‧‧‧反射鏡70‧‧‧Mirror

72‧‧‧第一反射鏡72‧‧‧First mirror

74‧‧‧第二反射鏡74‧‧‧second mirror

圖1為本發明實施例提供的車前燈燈具模組的剖面示意圖。FIG. 1 is a cross-sectional view of a headlight lamp module according to an embodiment of the present invention.

請參閱圖1，本發明提供的實施方式中的車前燈燈具模組100包括光源10、繞射元件20和液晶層30。Referring to FIG. 1 , a headlight lamp module 100 in an embodiment provided by the present invention includes a light source 10 , a diffractive element 20 , and a liquid crystal layer 30 .

所述光源10發出的光線為鐳射光束，該鐳射光束為單色平行光。在本實施方式中，該鐳射光束為藍光。該藍色鐳射光可由雷射器產生。The light emitted by the light source 10 is a laser beam, which is a monochromatic parallel light. In the present embodiment, the laser beam is blue light. The blue laser light can be generated by a laser.

所述繞射元件20正對光源10使光源10發出的鐳射光束經過繞射元件20的繞射後形成一光場，該光場可以為矩形光場。該繞射元件20對光源10發出的光線進行繞射可以利用小孔繞射原理，即，該繞射元件20為具有複數孔22的板體24，將鐳射光束正對這些孔22發射光線，鐳射光束在孔22處發生繞射，使相干波相互之間產生加強或減弱的干涉效果。鐳射光在各孔22處均發生繞射，經過各孔22處發生繞射的相干波進行疊加從而形成一矩形光場。上述相干波的疊加是通過控制孔22的直徑以及各孔22之間的間距等參數從而使任意兩個波之間在其中一個波的波峰和另一個波的波谷處相互疊加，從而形成較為均勻的光場，而避免使兩個波在波峰處或波谷處相互疊加以防止明暗相間的光場的形成。The diffractive element 20 faces the light source 10 such that the laser beam emitted by the light source 10 is diffracted by the diffractive element 20 to form a light field, which may be a rectangular light field. The diffractive element 20 diffracts the light emitted by the light source 10 by the principle of aperture diffraction, that is, the diffractive element 20 is a plate body 24 having a plurality of holes 22, and the laser beam is directed to the holes 22 to emit light. The laser beam is diffracted at the aperture 22 such that the coherent waves create an enhanced or weakened interference effect with each other. The laser light is diffracted at each of the holes 22, and the coherent waves that have been diffracted through the respective holes 22 are superimposed to form a rectangular light field. The superposition of the above-mentioned coherent waves is such that the diameter of the control hole 22 and the spacing between the holes 22 and the like are such that any two waves are superimposed on each other at the peak of one wave and the other wave, thereby forming a uniform The light field, while avoiding the superposition of two waves at the peak or trough to prevent the formation of a light field between the light and dark.

所述繞射元件20設置於光源10與液晶層30之間。經繞射元件20的繞射形成的矩形光投射到液晶層30上並通過液晶層30控制形成遠光或近光。The diffractive element 20 is disposed between the light source 10 and the liquid crystal layer 30. The rectangular light formed by the diffraction of the diffraction element 20 is projected onto the liquid crystal layer 30 and controlled to form a high beam or a low beam by the liquid crystal layer 30.

所述液晶層30包括兩垂直的偏振片和複數陣列分佈的畫素單元。所述兩偏振片分別為第一偏振片和第二偏振片，第一偏振片位於液晶層30的入光側，第二偏振片位於出光側。當入射光線為偏振光時，該偏振光可全部進入液晶層30從而可控制該光線在出光側出光的亮或暗。由於光源10發出的鐳射光即為偏振光，該光線經繞射元件20的繞射後仍為偏振光，可控制液晶層30的入光側的偏振片的穿透方向與該光線的偏振方向相同，使所有光線均可入射至液晶層30內部。再通過控制畫素單元的透光面積從而控制進入液晶層30內的光線在出光側的出光量，進而控制出光線的亮或暗，形成遠光或近光。具體地，這些畫素單元選擇性地在透光面積不同的第一狀態和第二狀態之間切換，當畫素單元切換至第一狀態時，光場的光線穿過畫素單元而投射出遠光，當畫素單元切換至第二狀態時，光場的部分光線被阻擋，另一部分光線穿過畫素單元而投射出近光。利用偏振光搭配液晶層30從而可達到遠光和近光的轉換，而不需要其他遮罩結構及其輔助機構，有效的節省車前燈內部結構的空間，使調光機構簡化，並可有效的縮小車前燈具的體積。The liquid crystal layer 30 includes two vertical polarizing plates and a plurality of arrays of pixel units. The two polarizing plates are respectively a first polarizing plate and a second polarizing plate. The first polarizing plate is located on the light incident side of the liquid crystal layer 30, and the second polarizing plate is located on the light exiting side. When the incident light is polarized light, the polarized light may all enter the liquid crystal layer 30 to control whether the light is bright or dark on the light exiting side. Since the laser light emitted by the light source 10 is polarized light, the light is still polarized after being diffracted by the diffraction element 20, and the direction of penetration of the polarizing plate on the light incident side of the liquid crystal layer 30 and the polarization direction of the light can be controlled. In the same manner, all light can be incident on the inside of the liquid crystal layer 30. Then, by controlling the light transmission area of the pixel unit, the amount of light entering the liquid crystal layer 30 on the light exiting side is controlled, thereby controlling the light or darkness of the light to form a high beam or a low beam. Specifically, the pixel units selectively switch between the first state and the second state in which the light transmission areas are different. When the pixel unit is switched to the first state, the light of the light field is projected through the pixel unit. At high beam, when the pixel unit is switched to the second state, part of the light of the light field is blocked, and another part of the light passes through the pixel unit to project the low beam. The polarized light is matched with the liquid crystal layer 30 to achieve the conversion of the high beam and the low beam, without the need for other mask structures and auxiliary mechanisms, which effectively saves space in the internal structure of the headlight, simplifies the dimming mechanism, and is effective The size of the front lights is reduced.

所述液晶層30的出光側上進一步設有一螢光粉層40，在本實施方式和中，該螢光粉層40內包含黃色螢光粉。由於通過液晶層30後的光仍為藍光，為使其轉變為白光於是在液晶層30的出光側鍍上該黃色的螢光粉層40。藍光照射在黃色螢光粉上，部分藍光被吸收後激發出黃光波段，並與未被吸收的藍光混合成白光場。A phosphor layer 40 is further disposed on the light-emitting side of the liquid crystal layer 30. In the embodiment and the phosphor powder layer 40, the phosphor powder layer 40 contains yellow phosphor powder. Since the light passing through the liquid crystal layer 30 is still blue light, the yellow phosphor powder layer 40 is plated on the light-emitting side of the liquid crystal layer 30 in order to convert it into white light. The blue light is irradiated on the yellow fluorescent powder, and some of the blue light is absorbed to excite the yellow light band, and is mixed with the unabsorbed blue light to form a white light field.

所述車前燈燈具模組100還包括一透鏡50。光線經透鏡50折射後出射到車前燈燈具模組100的外部對路面進行照明。The headlight lamp module 100 further includes a lens 50. The light is refracted by the lens 50 and exits to the outside of the headlight lamp module 100 to illuminate the road surface.

所述車前燈燈具模組100進一步包括散熱模組60和反射鏡70。所述散熱模組裝設於光源10的背側，以用於將光源10產生的熱量快速消散。該散熱模組60包括基板62和散熱鰭片64。該基板62貼設於光源10上，在本實施方式中，該光源10由雷射器產生，因此基板62貼設於雷射器設置，以吸收雷射器發出鐳射光時產生的熱量。散熱鰭片64自基板62向背離光源10的方向延伸。在本實施方式中，散熱鰭片64自基板62向背離光源10的延伸方向與最終車前燈燈具模組100的出光方向一致。所述反射鏡70包括第一反射鏡72和第二反射鏡74，第一反射鏡72與光源10發出的光線呈45°夾角設置，以將光源10發出的光線垂直反射向第二反射鏡74。第二反射鏡74與第一反射鏡72相互垂直設置，從第一反射鏡72反射出的光線入射到第二反射鏡74上，並將該光線進一步垂直反射，進而入射到繞射元件20，並以此通過液晶層30、螢光粉層40和透鏡50，最終從透鏡50出射。光源10發出的光線與最終從透鏡50出射的光線呈反向平行。The headlight lamp module 100 further includes a heat dissipation module 60 and a mirror 70. The heat dissipation mold is assembled on the back side of the light source 10 for quickly dissipating heat generated by the light source 10. The heat dissipation module 60 includes a substrate 62 and heat dissipation fins 64. The substrate 62 is attached to the light source 10. In the present embodiment, the light source 10 is generated by a laser. Therefore, the substrate 62 is attached to the laser to absorb heat generated when the laser emits laser light. The heat dissipation fins 64 extend from the substrate 62 in a direction away from the light source 10. In the present embodiment, the heat dissipation fins 64 are aligned with the light exiting direction of the final headlight lamp module 100 from the substrate 62 in a direction away from the light source 10. The mirror 70 includes a first mirror 72 and a second mirror 74. The first mirror 72 is disposed at an angle of 45° with the light emitted by the light source 10 to vertically reflect the light emitted by the light source 10 toward the second mirror 74. . The second mirror 74 and the first mirror 72 are disposed perpendicular to each other, and the light reflected from the first mirror 72 is incident on the second mirror 74, and the light is further vertically reflected and incident on the diffractive element 20, Thereby, the liquid crystal layer 30, the phosphor powder layer 40, and the lens 50 are finally passed through the lens 50. The light emitted by the source 10 is antiparallel to the light that is ultimately emitted from the lens 50.

本發明的車前燈燈具模組100利用鐳射光搭配液晶層30，利用偏振光入射到液晶層30內可通過控制液晶層30內的畫素單元的透光面積從而控制最終出射光線的亮或暗，進而轉換遠光和近光，而不需要其他遮罩結構及其輔助機構，有效的節省車前燈內部結構的空間，使調光機構簡化，並可有效的縮小車前燈具的體積。The headlight lamp module 100 of the present invention uses laser light to match the liquid crystal layer 30, and the polarized light is incident into the liquid crystal layer 30 to control the brightness of the final emitted light by controlling the light transmissive area of the pixel unit in the liquid crystal layer 30. Dark, and then convert high beam and low beam, without the need for other mask structures and their auxiliary mechanisms, effectively saving space in the internal structure of the headlights, simplifying the dimming mechanism, and effectively reducing the volume of the front lights.

綜上所述，本發明確已符合發明專利之要件，遂依法提出專利申請。惟，以上所述者僅為本發明之較佳實施方式，自不能以此限製本案之申請專利範圍。舉凡熟悉本案技藝之人士援依本發明之精神所作之等效修飾或變化，皆應涵蓋於以下申請專利範圍內。In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

無no

100‧‧‧車前燈燈具模組 100‧‧‧ headlights lighting module

10‧‧‧光源 10‧‧‧Light source

20‧‧‧繞射元件 20‧‧‧Diffractive components

22‧‧‧孔 22‧‧‧ holes

24‧‧‧板體 24‧‧‧ board

30‧‧‧液晶層 30‧‧‧Liquid layer

40‧‧‧螢光粉層 40‧‧‧Fluorescent powder layer

50‧‧‧透鏡 50‧‧‧ lens

60‧‧‧散熱模組 60‧‧‧ Thermal Module

62‧‧‧基板 62‧‧‧Substrate

64‧‧‧散熱鰭片 64‧‧‧Heat fins

70‧‧‧反射鏡 70‧‧‧Mirror

72‧‧‧第一反射鏡 72‧‧‧First mirror

74‧‧‧第二反射鏡 74‧‧‧second mirror

Claims (7)

一種車前燈燈具模組，包括鐳射光源、繞射元件和液晶層，鐳射光源發出的鐳射光經繞射元件後形成光場，液晶層包括複數畫素單元，這些畫素單元選擇性地在透光面積不同的第一狀態和第二狀態之間切換，當畫素單元切換至第一狀態時，光場的光線穿過畫素單元而投射出遠光，當畫素單元切換至第二狀態時，光場的部分光線被阻擋，另一部分光線穿過畫素單元而投射出近光。A headlight lamp module comprises a laser light source, a diffractive element and a liquid crystal layer, wherein the laser light emitted by the laser light source forms a light field after the diffraction element, and the liquid crystal layer comprises a plurality of pixel units, the pixel units being selectively Switching between the first state and the second state with different light transmission areas, when the pixel unit is switched to the first state, the light of the light field passes through the pixel unit to project the high beam, and when the pixel unit switches to the second In the state, part of the light in the light field is blocked, and another part of the light passes through the pixel unit to project the low beam. 如申請專利範圍第1項所述的車前燈燈具模組，其中，所述繞射元件為具有複數小孔的板體，所述鐳射光源正對所述小孔並在小孔處發生繞射形成矩形光場。The headlight lamp module of claim 1, wherein the diffractive element is a plate body having a plurality of small holes, and the laser light source is opposite to the small hole and is wound around the small hole. Shoot to form a rectangular light field. 如申請專利範圍第1項所述的車前燈燈具模組，其中，所述液晶層還包括位於入光側的第一偏振片和位於出光側的第二偏振片，第一偏振片的穿透方向與鐳射光源所發出的光的偏振方向相同。The headlight lamp module of claim 1, wherein the liquid crystal layer further comprises a first polarizing plate on the light incident side and a second polarizing plate on the light exiting side, the first polarizing plate is worn. The direction of polarization is the same as the direction of polarization of the light emitted by the laser source. 如申請專利範圍第1項所述的車前燈燈具模組，其中，所述鐳射光源發出的光線為藍色鐳射光，所述液晶層的出射光線的一側上設有黃色螢光粉層。The headlight lamp module of claim 1, wherein the laser light source emits blue laser light, and the liquid crystal layer has a yellow phosphor powder layer on a side of the light emitted from the liquid crystal layer. . 如申請專利範圍第4項所述的車前燈燈具模組，其中，所述車前燈燈具模組還包括透鏡，透鏡位於液晶層的出射光線的一側。The headlight lamp module of claim 4, wherein the headlight lamp module further comprises a lens, and the lens is located on a side of the liquid crystal layer that emits light. 如申請專利範圍第5項所述的車前燈燈具模組，其中，所述車前燈燈具模組還包括散熱模組，所述散熱模組包括基板和散熱鰭片，所述基板貼設於光源上，散熱鰭片自基板朝向遠離光源的方向延伸。The headlight lamp module of claim 5, wherein the headlight lamp module further comprises a heat dissipation module, the heat dissipation module comprises a substrate and a heat dissipation fin, and the substrate is attached On the light source, the heat dissipation fins extend from the substrate toward the direction away from the light source. 如申請專利範圍第6項所述的車前燈燈具模組，其中，所述車前燈燈具模組還包括第一反射鏡和第二反射鏡，第一反射鏡與光源發出的光線呈45°夾角設置，第二反射鏡與第一反射鏡相互垂直設置，光源發出的光線經第一反射鏡和第二反射鏡依次反射後的出射方向與光源發出的光線的入射方向反向平行。
The headlight lamp module of claim 6, wherein the headlight lamp module further comprises a first mirror and a second mirror, and the light emitted by the first mirror and the light source is 45. The angle between the second mirror and the first mirror is perpendicular to each other, and the light emitted by the light source is sequentially reflected by the first mirror and the second mirror in an opposite direction to the incident direction of the light emitted by the light source.
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